论文部分内容阅读
对川西北地区一些典型金矿区的地质-土壤剖面分析显示,土壤微生物蜡样芽孢杆菌Bacillus cereus的芽孢计数分布可以指示下伏基岩的金矿化.B.cereus芽孢计数的异常区位于矿体的顶、底板,而在矿体出露地表处,芽孢计数出现极低区.B.cereus芽孢计数还进一步受到非矿化因素特别是土壤类型的强烈影响,使不同矿区芽孢计数的背景值不同.这种微生物学找矿法在远景区范围内,或在矿区的勘探中可能会取得较好的找矿效果.但要使该方法能很好地应用在区域化探中,必须建立不同自然地理环境(特别是不同土壤类型)的芽孢计数背景值数据库.
The geo-soil profile analysis of some typical gold mines in northwestern Sichuan showed that the spore count distribution of the soil microbial Bacillus cereus could indicate the gold mineralization of the underlying bedrock. The top and bottom of the body, while the spore count appears extremely low at the exposed surface of the ore body.Cereus spore counts are further strongly influenced by the non-mineralization factors, especially the soil type, so that the background value of spore counts in different mining areas This microbiological prospecting method may achieve better prospecting results in the prospect area or in the prospecting of the mine area.But to make this method well applied to the regional geochemical exploration, different methods must be established Spore count background database for natural geography (especially for different soil types).